Catalog #: C2010005 (1 g)
Chlorophenol red-β-D-galactopyranoside (CPRG) is a high sensitivity beta-galactosidase substrate that surpasses o-nitrophenyl-beta-D-galactopyranoside (ONPG). CPRG is very soluble in water and its chromogenic product (chlorophenol red) has an extinction coefficient that is 21-fold higher than that of ONPG (o-nitrophenol). As a result, CPRG can be used in highly sensitive beta-galactosidase-based assays and detection methods. Absorbance of chlorophenol red can be measured at 570-595 nm. The sodium salt of CPRG has a molecular weight of 607.4 g/mol and is supplied as an orange-yellow powder. Custom bulk orders of this product are available upon request.

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